Not as far along as expected or having a miscarriage


So I either ovulated late or I'm about to have a miscarriage. I'm supposed to be 7 w 1 day and I went for an ultra sound today and they saw what could be a yoke sac and I'm only 5 ish weeks or again I'm about to miscarry . Has anyone been in my boat, I'm really scared. They are sending me for more blood work tomorrow.